Rolling mill



LLA

May 29, 1928.

INVENTOR May 29, 1928. 1,671,769

L. LEE

ROLLING .MILL

Fil A1191, 1925 2 Sheets-Sheet 2 Patented May 29, 1928.

UNITED sra'rss rares o FFIC'E.

LEIF LEE, or YOUNGSTOWN, onto.

i ROLLING MILL.

Application filed August 1, 1925. Serial No. 47,4:4'2'.

of the invention is not limited with respect to the particular materialbeing handled, it being adaptable to other shapes as desired. 3 In sheetmills as used at the present time, several stands of rolls are usuallyconnected in line, each line including at least one two high roughingstand and one two high finishing stand with the rollsof the respectivestands in substantial end to end relationship. The bottom rollof eachstand is ordinarily positively driven, bottom rolls in adjacent standsbeing customarily driven from one end through a spindle located intermediate the roll stands and supported in a suit-- able housingtherebetween.

Union rules as at present in force provide that when the distancebetween the centers of rolls in adjacent stands exceeds a predeterminedamount, a single operator will not be permitted to make the throw fromthe roughing pass to the finishing pass, it being necessary in suchcases to use a helper. This constitutes what is known as adouble throwmill and is obviously objectionable due largely to the number ofoperators required for the-rolling of the sheets. Where the distancedoes not exceed a predetermined minimum. the mill is referred to asa'siingle throw, and a single operator may effect the transfer from onepass. to the other.

At the present time two difierent typesof mills are utilized in both thesingle throw and the double throw class. In one type, the top rolls arenot positively driven, but are caused to rotate by the friction ofthe'entering piece. Consequently, the thickness of the piece is limitedto'that which will enter the rolls. In the other type, the top rolls arepositively driven in order topermit the use of a Wider range in thethickness of the pieces, and to insure that the pieces will enter therolls quickly andsurely.

It has heretofore been proposed to effect the driving of the top roll,in mills of the second type, in many different ways. As illustrated forexample in the patent of F. C. Biggert, J12, No. 1.487007 of March 18,

1924:, one method embodies a floating housing with a friction drivebetween the lower and upper rolls. It has also been proposed to eifectthis driving by means of an independent motor of comparatively low horsepower for the upper roll. the objection to such a construction howeverbeing the difficulty in mounting the motor together with the problemsinvolved in the accurate control thereof.

The present invention relates particularly to an improvement in a driveof the character shown in the patent to F. C. Biggert, Jr, referred toand has for certain of its objects improvements therein of such natureas to permit the use of a longer shaft for driving the upper roll,whereby the wear is correspondingly reduced, and also of means proridingan improved mounting for the shaft,

in the accompanying drawings there is shown for purposes of'illustrationonly a ireferred embodiment of the present invention, it beingunderstood that these drawings donotdefine the limits of the inventionas changes in the construction and operation disclosed therein may bemadc'without departing from the spirit of the present invention or thescope of my broader claims.

lnthe drawings:

Figure l is a topplan view of a portion of a rolling mill. installationembodying the present invention;

Figure 2 is a'vertical sectional view on the line llll of Figure 1,certain of the parts being shown in elevation for sake of clearness; and

Figure 3 is a vertical trai'lsverse sectional view on the line ,llI--IIIof Figure 1 looking in the direction of the arrows.

In carrying out the present invention, there'may be provided a rollingmill installationgenerally similar to that now employed and comprising aroll stand having a lower roll 2 and an upper roll 3. The roll 2 hastions 6 adapted to receive bolts 7 depending from lugs 8 on a standard 9supported on shoes 10 as understood in the art. Surrounding the bolts 7are compression springs 11 the compression of which may be initiallyadjusted in any desired manner as by nuts 12. It will be understood bythose skilled in the art that this construction permits the housing 5to'move relatively to the standard 9 as may be required by the operationof the spindle 4.

having spaced, bearings 15' f0r a drive shaft" 16 mounted therein to thespindle 4.

Secured in any in substantial parallelism desired manner to the ingengagement with a'gear 19 the plane of which may be angii'larly disposedto its own plane. This-gear 19 has a similar tooth con structionand issecured in anyidesired manher to athub20 carried by "a casing 21constituting par-t ofa friction power transmit ting mean's ofanv,desired construct-ion, but preferably-of thetype disclosedin my priorPatent No. 1,443,026 of, January 23,1923.

' [As clearlyfdisclosed 'in 'sai'd'p'atent', the. casis adaptedtoiriction'ally drive the 'hllb 22 through suitableintermedi atemechasecured to the shaft 16 in suchrn'anneri asto effectively drive thesame,

Inoperation, be apparentthat'the' spindle 4 constitutes a driving meansextending between thelower rolls ofadjacent I, roll stands and at thesame time serves to as -torniaintain the desired driving engagedrive thecasing '21 and by means thereof friction ally drive the shaft 16 and the.upper roll 3. ne er-5' 17 and 19 are so shaped ment irrespective of therelative angular disposition thereof, whereby the gear 19 will becontinuously driven in any angular positions assumed by the yoke 1 Handthe shaft- 16. At the samejtime, thedriving mechanisrn is S0-(301'n1)a'dl3ly arranged as not to necessitate any increase in thedistance be tween the centers of adjacent r0ll"-stands.

This permits the maintenance of a' single. throw 'conditi on which" is"desirable for "the,

reasons pointed out.

' Further; advantages 'arise from the 151 0;

vision of a floating" housing ton-the spindle which connects th'e'bottomrolls of'adja'cent stands and from an independently movable "spondinglv5r housing. inth'e form ot a yoke,for the driving shaft for the upperroll.

in the position of the upper roll isr'cor-re-' reduced; [In this respectiif'willv beappar'ent that the'driving' shaft-has an'effective-lengthequalto' the distance from its the axis ofrotationohthe yoke housingl,

driving connection .with the-upper roll to this axis being substantiallynormal-fto-the axislof'th'e shaft 1 6. f

1 'Still other advantages a s obtained by reason of "a sha f-t housingmovable-about trnnnions and providing saced'bearings f for rigidlysupp'ortin'g the sha t 'on oppositesides of the axis of said trunnionsiStill other advantages arise from the "'-increase in the'et'fectivelength'of the shaft' lfi whereby the relative an ul r distance throughwhich it moves for each variation 1; In a rolling,mill,'a 'spindleadaptedtoz" "connecta roll in one ,st'and with a} roll in'f--anviadjacent stand, a floating]'housingfflfor v said spindle, a"driving shaft, gearing vbe said spindle and share, and a tiltable P Fspindle 4 is a gear 17 preferably having teeth 18 of curved contourtoprovide/a driv-' housing r said shaft and at. least a P0r-. tiOn 0fgearin sub t ntially as def 1 scribed.

2. In a rolling mill, a spindle adapted P1 0 connect'a, roll in onestand? with a'rol-l'fi'n ji [1 an adjacent standfa jfioating' hoiisin fsaid spindle,a"-driving shaft, igeaiin be:-: e-

,7 tween said spinclleiand'shaft,'and?a'inovable j housing for said;shaftand atleas t fa or-"580"; tion of'the 'fgearing-said'rhovableheiisy I ingfhaving supporting .tr'unnions prof] ectin'gt therefrom,substantially asdescribed.*- Ti j' i A roll. driving means for "rdllingni'lls; i comprising 1 a standard, a "spindle honsin'g i movabl ycarried fthereby,-ia spindle in" said housing, a shaft housing movably'1 :Carrie'd bTsa-id standard, a shaft journale'd "in said" sha'ft'h'ou'siingf and means carried fhy-Fth housing" forjfri'ctional lydriving 'sa'id shaft from said spindle, substantially 1 as del sclfibediv.

4. In a rolling mill, ajs t-andard, a spindle V housing movablerelativelyjtheretoyand:a shaft housing jo'urnaledin' said standard forrocking jmover'nent' thereinjsaid shaft housf p 'inghavingspacedbearings carried hereby; t substantiallyas describedi i j drive forrolling mills comprising a standard, a" spincl'le. I mounted .fliereinand j 1 adapted to dri ve,airoll intheniill; a 'shaitt 1 housing carriedby theistan'd'ard; ashafti ina-f I I I the housing adaptedto drive'another' foll' stantially as described I "-6t A-ldriive for rollingmills standard, a" spindlemounted; therein "and T I adapted 't0= d=r-ivea roll in the rni ll,- a"shafthousing carried by the standard, a shaftin the housingfadapted to drive'another' rolliin. theniilh and agear,onrthe shaft operatively connected to the. spindle, the shafthousin g11 1 being tiltab'lef about an axis fllyingisiibstan f f 1 ti'a'l'lydnthe' plane-of the' 'gear, the-gear; Y

teeth being convex in form, substantially as" described; I "2; v F 3- Y7 In a rolling mill, a'connectienbetween a H two rollers' -havingrelative movement iinfa plane defined bytheiraXies comprisingcapivota'lly mounted supportin'g' "frame,- a H shaftan'd. a frictionclutch supportedbyfthef A.

frame andmo'vabl'e therewith.

Ina roll-ing'inill, asconnectionibet'ween I two rollers havingrelative.movement in a plane defined by their faxes cornprising I pivotallymounted supporting frame,;.- Ta" L shataagearing wheelghavingconvexteeth 1301 and a friction clutch supported by the frame to theplane defined by the rollers, a shaft and movable therewith. and adriving element therefor supported 9. In a rolling mill, a connectionbetween by the frame and movable therewith. two rollers having relativemovement in a In testimony whereof I have hereunto set 8 plane definedby their axes comprising a my hand. I

pivotally mounted supporting frame, the axis of which is substantiallyat right angles LEIF LEE.

